一种基于广域角速度信号的暂态励磁控制方法  

A Transient Excitation Control Method Based on Wide Area Angular Velocity Signal

作　　者：杨冬锋 孙智 刘迎迎 Yang Dongfeng;Sun Zhi;Liu Yingying(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology(Northeast Electric Power University),Jilin Jilin 132012;State Grid Weifang Hanting Power Supply Company,Weifang Shandong 261100)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132012 [2]国网潍坊市寒亭区供电公司,山东潍坊261100

出　　处：《东北电力大学学报》2020年第2期54-59,共6页Journal of Northeast Electric Power University

基　　金：国家自然科学基金委(U18866601)。

摘　　要：针对电网发生故障后的暂态稳定问题,文中提出了一种基于广域角速度信号的暂态励磁控制方法,电网中的角速度信号更易获取,因此该控制方法简单易行.首先,通过临界机群的识别判据识别出故障电网中的临界机群;然后,通过李雅普诺夫理论推导出一种将广域角速度信号作为控制信号的励磁控制器,并通过该控制器对临界机群内所有发电机组进行励磁控制;最后通过在Matlab/simulink仿真平台搭建的10机39节点系统验证该励磁控制方法能有效改善故障电网的暂态稳定性.In order to solve the problem of transient stability after power grid failure,a transient excitation control method based on wide area angular velocity signal is proposed.The angular velocity signal in power grid is more easily obtained,so the control method is simple and easy.First,the critical cluster in the fault power grid is identified by the critical cluster identification criteria;then,an excitation controller is derived by Lyapunov theory,which takes the wide area angular velocity signal as the control signal and controls the excitation of all the generator groups in the critical cluster through the controller;finally,the classic 10 units and 39 sections are built in Matlab/Simulink simulation platform The point system verifies that the excitation control method can effectively improve the transient stability of the fault grid.

关 键 词：广域角速度信号 李雅普诺夫理论 励磁控制 临界机群 

分 类 号：TM76[电气工程—电力系统及自动化]